Will undersupply correct itself by nursing more frequently?

Vegasbb

For mobile users: LO is 19 days old. 

LO had jaundice issues the first 10 days or so. I always had to wake him to nurse, and he'd typically only nurse 10-15 minutes. It was a struggle to feed him. Finally around 10 days he started being hungry ALL THE TIME. We have been nursing 30 minutes every 2 hours or so and sometimes cluster feeds for a few hours before bed time. He is definitely emptying the breast (I try to pump to check after feeds and they are fully empty).

I saw a LC yesterday for a weighed feeding, and he's only getting 2 ounces per feeding. She said that's low and should be more like 2.5 ounces. Is my supply permanently low or is there a chance this will get fixed over the coming weeks by nursing more frequently? I had insane over supply the first few days of his life, but I'm worried with him not eating as much as he should have been my supply is permanently low now.